{"id":"vidhyamitra:city-day:erode:2121-10-21:en","page_class":"VM-CD-city-day","url":"https://vidhyamitra.com/city/erode/2121-10-21","language":{"target_lang":"en","base_lang":"en","quality_tier":"canonical"},"data":{"date":"2121-10-21","date_display":"October 21, 2121 CE","panchanga":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2121,"month":10,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2496032.770833,"kali_year":5223,"ahargana":1907567.2708,"sun":{"sidereal_longitude":181.067,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":294.9173,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":113.8503,"elapsed_within_tithi_degrees":5.8503},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":294.9173,"elapsed_within_degrees":1.584},"yoga":{"number":9,"name":"Śūla","sum_longitude":115.9844},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"sky":{"method":"Sūrya-Siddhāntic Bhāskara-II 4-step iteration with atan2-based śīghra + varying peripheries + lunar latitude","engine_version":"3.0 (Pūrṇa — complete SS implementation)","tradition_sources":"Āryabhaṭīya 499 CE → SS Ch.1-5 Burgess 1860 → Siddhānta-Śiromaṇi Bhāskara II 1150 → Tantrasaṅgraha Nīlakaṇṭha 1501","input":{"year":2121,"month":10,"day":21,"hour":6,"minute":30,"calendar":"gregorian"},"julian_day":2496032.770833,"ahargana":1907567.2708,"kali_year":5223,"ayanamsa_lahiri":25.5545,"grahas":{"sun":{"sidereal_longitude":182.08794999999998,"rashi":{"number":7,"name":"Tulā"},"nakshatra":{"number":14,"name":"Citrā","pada":3},"retrograde":false},"moon":{"sidereal_longitude":292.56764999999996,"rashi":{"number":10,"name":"Makara"},"nakshatra":{"number":22,"name":"Śravaṇa","pada":4},"retrograde":false,"latitude":2.0421},"mars":{"sidereal_longitude":211.92305,"rashi":{"number":8,"name":"Vṛścika"},"nakshatra":{"number":16,"name":"Viśākhā","pada":4},"retrograde":false},"mercury":{"sidereal_longitude":171.75054999999998,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":4},"retrograde":false},"jupiter":{"sidereal_longitude":119.48255,"rashi":{"number":4,"name":"Karka"},"nakshatra":{"number":9,"name":"Aśleṣā","pada":4},"retrograde":false},"venus":{"sidereal_longitude":168.48635000000002,"rashi":{"number":6,"name":"Kanyā"},"nakshatra":{"number":13,"name":"Hasta","pada":3},"retrograde":false},"saturn":{"sidereal_longitude":81.43525,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":1},"retrograde":true},"rahu":{"sidereal_longitude":267.9061,"rashi":{"number":9,"name":"Dhanu"},"nakshatra":{"number":21,"name":"Uttara Āṣāḍhā","pada":1},"retrograde":false},"ketu":{"sidereal_longitude":87.9061,"rashi":{"number":3,"name":"Mithuna"},"nakshatra":{"number":7,"name":"Punarvasu","pada":3},"retrograde":false}},"panchang":{"method":"Sūrya Siddhānta + Bhāskara-II iterative manda + Kerala-school (Mādhava-Nīlakaṇṭha) evection + variation + annual equation","engine_version":"2.0 (Kerala-school enhanced)","accuracy_note":"Sub-degree on Moon at any Kali-Yuga date (~2-5° residual max)","tradition_chain":"Āryabhaṭa(499) → Brahmagupta(628) → Bhāskara II(1150) → Mādhava(~1400) → Parameśvara(1430) → Nīlakaṇṭha(1501) → this","input":{"year":2121,"month":10,"day":21,"hour":6,"minute":30,"second":0,"calendar":"gregorian"},"julian_day":2496032.770833,"kali_year":5223,"ahargana":1907567.2708,"sun":{"sidereal_longitude":181.067,"rashi":7,"rashi_name":"Tulā"},"moon":{"sidereal_longitude":294.9173,"rashi":10,"rashi_name":"Makara"},"tithi":{"number":10,"name":"Daśamī","paksha":"Śukla","full_name":"Śukla Daśamī","elongation_degrees":113.8503,"elapsed_within_tithi_degrees":5.8503},"nakshatra":{"number":23,"name":"Dhaniṣṭhā","pada":1,"moon_longitude":294.9173,"elapsed_within_degrees":1.584},"yoga":{"number":9,"name":"Śūla","sum_longitude":115.9844},"karana":{"half_tithi_index":18,"name":"Taitila"},"vara":{"number":4,"name":"Maṅgalavāra (Tuesday)"}},"eclipse_current":{"solar":{"type":"solar","occurs":false,"moon_latitude":2.042,"elongation":113.85},"lunar":{"type":"lunar","occurs":false,"moon_latitude":2.042,"opposition_distance":66.15}},"eclipse_window_40days":[]},"city":{"slug":"erode","name":"Erode, Tamil Nadu","lat":11.341,"lon":77.7172,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"tier2":{"city":{"slug":"erode","name":"Erode, Tamil Nadu","lat":11.341,"lon":77.7172,"tz_offset_hours":5.5,"state":"Tamil Nadu","country":"IN","tier":"tier-1"},"sunriseLocal":"06:08","sunsetLocal":"17:58","solarNoonLocal":"12:03","dayLengthHours":11.827564382843484,"dayLengthDisplay":"11 Hours 49 Mins 39 Secs","nightLengthDisplay":"12 Hours 10 Mins 21 Secs","moonriseLocal":"13:35","moonsetLocal":"01:15","rahuKala":{"name":"Rāhu Kāla","start":"15:01","end":"16:29","startHours":15.01192075293246,"endHours":16.490366300787894,"quality":"inauspicious"},"yamaganda":{"name":"Yamaganda","start":"09:06","end":"10:35","startHours":9.098138561510718,"endHours":10.576584109366152,"quality":"inauspicious"},"gulika":{"name":"Gulika Kāla","start":"12:03","end":"13:32","startHours":12.055029657221588,"endHours":13.533475205077025,"quality":"inauspicious"},"durMuhurta":[{"name":"Dur Muhūrta","start":"08:54","end":"09:18","startHours":8.901012488463326,"endHours":9.295264634558109,"quality":"avoid"}],"varjyam":{"name":"Varjyam","start":"06:38","end":"06:57","startHours":6.634062648418325,"endHours":6.949464365294151,"quality":"avoid"},"abhijit":{"name":"Abhijit Muhūrta","start":"11:40","end":"12:27","startHours":11.660777511126806,"endHours":12.44928180331637,"quality":"auspicious"},"brahmaMuhurta":{"name":"Brahma Muhūrta","start":"04:34","end":"05:21","startHours":4.5642388814207155,"endHours":5.352743173610281,"quality":"auspicious"},"pratahSandhya":{"name":"Prātaḥ Sandhyā","start":"05:09","end":"06:08","startHours":5.15561710056289,"endHours":6.141247465799847,"quality":"auspicious"},"vijayaMuhurta":{"name":"Vijaya Muhūrta","start":"14:02","end":"14:49","startHours":14.026290387695504,"endHours":14.81479467988507,"quality":"auspicious"},"godhuliMuhurta":{"name":"Godhūli Muhūrta","start":"17:46","end":"18:10","startHours":17.76881184864333,"endHours":18.16881184864333,"quality":"auspicious"},"sayahnaSandhya":{"name":"Sāyāhna Sandhyā","start":"17:58","end":"18:28","startHours":17.96881184864333,"endHours":18.46162703126181,"quality":"auspicious"},"amritKala":{"name":"Amṛta Kāla","start":"17:43","end":"19:28","startHours":17.71881184864333,"endHours":19.46881184864333,"quality":"auspicious"},"nishitaMuhurta":{"name":"Niśīta Muhūrta","start":"23:40","end":"00:27","startHours":23.660777511126806,"endHours":24.44928180331637,"quality":"auspicious"},"dayChoghadiyas":[{"name":"Roga","start":"06:08","end":"07:37","startHours":6.141247465799847,"endHours":7.619693013655282,"quality":"inauspicious"},{"name":"Udveg","start":"07:37","end":"09:06","startHours":7.619693013655282,"endHours":9.098138561510718,"quality":"inauspicious"},{"name":"Chala","start":"09:06","end":"10:35","startHours":9.098138561510718,"endHours":10.576584109366152,"quality":"neutral"},{"name":"Labha","start":"10:35","end":"12:03","startHours":10.576584109366152,"endHours":12.055029657221588,"quality":"auspicious"},{"name":"Amṛta","start":"12:03","end":"13:32","startHours":12.055029657221588,"endHours":13.533475205077025,"quality":"auspicious"},{"name":"Kāla","start":"13:32","end":"15:01","startHours":13.533475205077025,"endHours":15.01192075293246,"quality":"inauspicious"},{"name":"Śubha","start":"15:01","end":"16:29","startHours":15.01192075293246,"endHours":16.490366300787894,"quality":"auspicious"},{"name":"Roga","start":"16:29","end":"17:58","startHours":16.490366300787894,"endHours":17.96881184864333,"quality":"inauspicious"}],"nightChoghadiyas":[{"name":"Kāla","start":"17:58","end":"19:29","startHours":17.96881184864333,"endHours":19.490366300787894,"quality":"inauspicious"},{"name":"Śubha","start":"19:29","end":"21:01","startHours":19.490366300787894,"endHours":21.01192075293246,"quality":"auspicious"},{"name":"Roga","start":"21:01","end":"22:32","startHours":21.01192075293246,"endHours":22.533475205077025,"quality":"inauspicious"},{"name":"Udveg","start":"22:32","end":"00:03","startHours":22.533475205077025,"endHours":24.05502965722159,"quality":"inauspicious"},{"name":"Chala","start":"00:03","end":"01:35","startHours":24.05502965722159,"endHours":25.576584109366152,"quality":"neutral"},{"name":"Labha","start":"01:35","end":"03:06","startHours":25.576584109366152,"endHours":27.098138561510716,"quality":"auspicious"},{"name":"Amṛta","start":"03:06","end":"04:37","startHours":27.098138561510716,"endHours":28.619693013655283,"quality":"auspicious"},{"name":"Kāla","start":"04:37","end":"06:08","startHours":28.619693013655283,"endHours":30.141247465799847,"quality":"inauspicious"}],"horas":[{"name":"Hora 1","start":"06:08","end":"07:08","startHours":6.141247465799847,"endHours":7.141247465799847,"planetary_lord":"Mars"},{"name":"Hora 2","start":"07:08","end":"08:08","startHours":7.141247465799847,"endHours":8.141247465799847,"planetary_lord":"Jupiter"},{"name":"Hora 3","start":"08:08","end":"09:08","startHours":8.141247465799847,"endHours":9.141247465799847,"planetary_lord":"Saturn"},{"name":"Hora 4","start":"09:08","end":"10:08","startHours":9.141247465799847,"endHours":10.141247465799847,"planetary_lord":"Moon"},{"name":"Hora 5","start":"10:08","end":"11:08","startHours":10.141247465799847,"endHours":11.141247465799847,"planetary_lord":"Mercury"},{"name":"Hora 6","start":"11:08","end":"12:08","startHours":11.141247465799847,"endHours":12.141247465799847,"planetary_lord":"Venus"},{"name":"Hora 7","start":"12:08","end":"13:08","startHours":12.141247465799847,"endHours":13.141247465799847,"planetary_lord":"Sun"},{"name":"Hora 8","start":"13:08","end":"14:08","startHours":13.141247465799847,"endHours":14.141247465799847,"planetary_lord":"Mars"},{"name":"Hora 9","start":"14:08","end":"15:08","startHours":14.141247465799847,"endHours":15.141247465799847,"planetary_lord":"Jupiter"},{"name":"Hora 10","start":"15:08","end":"16:08","startHours":15.141247465799847,"endHours":16.141247465799847,"planetary_lord":"Saturn"},{"name":"Hora 11","start":"16:08","end":"17:08","startHours":16.141247465799847,"endHours":17.141247465799847,"planetary_lord":"Moon"},{"name":"Hora 12","start":"17:08","end":"18:08","startHours":17.141247465799847,"endHours":18.141247465799847,"planetary_lord":"Mercury"},{"name":"Hora 13","start":"18:08","end":"19:08","startHours":18.141247465799847,"endHours":19.141247465799847,"planetary_lord":"Venus"},{"name":"Hora 14","start":"19:08","end":"20:08","startHours":19.141247465799847,"endHours":20.141247465799847,"planetary_lord":"Sun"},{"name":"Hora 15","start":"20:08","end":"21:08","startHours":20.141247465799847,"endHours":21.141247465799847,"planetary_lord":"Mars"},{"name":"Hora 16","start":"21:08","end":"22:08","startHours":21.141247465799847,"endHours":22.141247465799847,"planetary_lord":"Jupiter"},{"name":"Hora 17","start":"22:08","end":"23:08","startHours":22.141247465799847,"endHours":23.141247465799847,"planetary_lord":"Saturn"},{"name":"Hora 18","start":"23:08","end":"00:08","startHours":23.141247465799847,"endHours":24.141247465799847,"planetary_lord":"Moon"},{"name":"Hora 19","start":"00:08","end":"01:08","startHours":24.141247465799847,"endHours":25.141247465799847,"planetary_lord":"Mercury"},{"name":"Hora 20","start":"01:08","end":"02:08","startHours":25.141247465799847,"endHours":26.141247465799847,"planetary_lord":"Venus"},{"name":"Hora 21","start":"02:08","end":"03:08","startHours":26.141247465799847,"endHours":27.141247465799847,"planetary_lord":"Sun"},{"name":"Hora 22","start":"03:08","end":"04:08","startHours":27.141247465799847,"endHours":28.141247465799847,"planetary_lord":"Mars"},{"name":"Hora 23","start":"04:08","end":"05:08","startHours":28.141247465799847,"endHours":29.141247465799847,"planetary_lord":"Jupiter"},{"name":"Hora 24","start":"05:08","end":"06:08","startHours":29.141247465799847,"endHours":30.141247465799847,"planetary_lord":"Saturn"}],"taraBala":{"favorable_nakshatras":["Aśvinī","Ārdrā","Punarvasu","Puṣya","Aśleṣā","Maghā","Svātī","Viśākhā","Anurādhā","Jyeṣṭhā","Mūla","Śatabhiṣaj","Pūrva Bhādrapadā","Uttara Bhādrapadā","Revatī"],"unfavorable_nakshatras":["Bharaṇī","Kṛttikā","Rohiṇī","Mṛgaśirā","Pūrva Phalgunī","Uttara Phalgunī","Hasta","Citrā","Pūrva Āṣāḍhā","Uttara Āṣāḍhā","Śravaṇa","Dhaniṣṭhā"],"nature":"Janma-tara if same nakshatra; favorable for 15 nakshatras"},"chandraBala":{"favorable_rashis":["Mithuna","Karka","Tulā","Vṛścika","Makara","Mīna"],"unfavorable_rashis":["Meṣa","Vṛṣabha","Siṃha","Kanyā","Dhanu","Kumbha"]},"dishaShool":"North (Uttara)","chandraVasa":"South-East","rahuVasa":"North","anandadiYoga":{"name":"Dhūmra","quality":"Inauspicious"},"tropicalRitu":"Śarad (Autumn)","vedicRitu":"Śarad (Autumn)","tropicalAyana":"Dakṣiṇāyana","vedicAyana":"Dakṣiṇāyana","meta":{"method":"BOB-History Sūrya-Siddhānta + Vidhyamitra Tier-2 spherical localization","declination":-10.633671301936669,"eotMinutes":15.829420566704727,"ayanamsa":25.5545}},"calendars":{"vikram_samvat":2178,"vikram_samvatsara":"Jaya","saka_samvat":2043,"saka_samvatsara":"Vṛṣa","bengali_samvat":1528,"malayalam_era":1297,"nanakshahi_year":652,"lunar_month":"Āśvina","lunar_month_paksha_full":"Āśvina Śukla Pakṣa","lunar_month_system":"purnimanta","lunar_month_purnimanta":"Āśvina","lunar_month_amanta":"Āśvina","lunar_month_is_adhika":false,"lunar_month_purnimanta_is_adhika":false,"lunar_month_amanta_is_adhika":false,"solar_month":"Tulā (Aippasi)","ritu":"Śarad (Autumn)","display_summary":"Āśvina Śukla Daśamī · Vikram 2178 Jaya · Śaka 2043 Vṛṣa"},"festivals":[{"id":"vijaya-dashami","name":"Vijaya Daśamī (Dasarā / Daśaharā)","name_sanskrit":"विजय दशमी","tradition":"Pan-Hindu","associated_deity":"Rāma (Rāvaṇa-vadha) + Durgā (Mahiṣāsura-vadha)","significance":"Rāma's victory over Rāvaṇa; Durgā's victory; ārambha-divasa for śilpa-kalā.","vrata":true,"primary_observance":"Rāvaṇa-dahana; Aparājitā-pūjā; Śastra-pūjā","detection":{"tithi_number":10,"tithi_paksha":"Śukla","lunar_month":"Āśvina"},"precedence":1,"related_chart":"rama","sources":["Vālmīki Rāmāyaṇa, Yuddha-Kāṇḍa","Devī Mahātmya"]}],"todays_walk":{"walk":{"id":"mangala-walk","name":"Maṅgala Walk","name_sanskrit":"मङ्गल यात्रा","type":"graha","description":"Right action + BG 2.31-38 (kṣatriya-dharma).","step_count":7,"url":"/walk/mangala-walk"},"reason":"Maṅgalavāra (Tuesday) — its presiding graha's walk."},"cosmic_resonances":[]},"validity":{"eternal":false,"location_specific":"erode"},"liturgical":{"opening":"जय श्री कृष्ण","closing":"ॐ तत् सत्","attribution":"Computed by Vidhyamitra Sūrya-Siddhānta substrate + Vidhyamitra Tier-2 layer"},"seo":{"title":"Pañchāṅga October 21, 2121 CE · Erode, Tamil Nadu · Vidhyamitra","description":"October 21, 2121 CE for Erode, Tamil Nadu: Śukla Daśamī, sūryodaya 06:08, sūryāsta 17:58.","schema_org_type":"Article","canonical":"https://vidhyamitra.com/city/erode/2121-10-21","hreflang_alternates":{"en":"https://vidhyamitra.com/city/erode/2121-10-21","sa":"https://sa.vidhyamitra.com/city/erode/2121-10-21","hi":"https://hi.vidhyamitra.com/city/erode/2121-10-21","x-default":"https://vidhyamitra.com/city/erode/2121-10-21"}},"provenance":[{"pillar":"BOB-History","pillar_version":"2.12.0","method":"Sūrya-Siddhānta first-principles + Bhāskara II + Kerala-school (Mādhava-Nīlakaṇṭha) corrections","retrieved_at":"2026-05-31T06:11:21.652Z","verification":{"type":"multi-marker","confidence":"canonical"}},{"pillar":"Vidhyamitra-Tier2","pillar_version":"0.1.0","method":"Spherical astronomy + Lahiri ayanamsa + standard solar declination + EoT correction","retrieved_at":"2026-05-31T06:11:21.652Z","verification":{"type":"community-validated","markers":["modern-reference checked timing on Narasiṁha Jayantī 2026"],"confidence":"verified"}}],"meta":{"generated_at":"2026-05-31T06:11:21.652Z","pillar_versions":{"Sūrya-Siddhānta":"Pūrṇa","Vidhyamitra-Tier2":"Pūrṇa"}}}